>Revelation 13:18 says, “Here is wisdom. Let him that has understanding count the number of the beast: for it is the number of a man; and his number is Six hundred threescore and six.“
666 is the symbolic number of all carbon-based lifeforms on Earth, hence why it is referred to as "the number of a man", or "a human number" as some translations have stated it. That's it, that's all. Anyone who says different is lying to themselves.